Contains: M 103, NGC 581
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M103 and Collinder 15

Technical card

Imaging telescope or lens: TeleVue TV102

Imaging camera: Canon T2i/550D

Mount: CGEM

Guiding telescope or lens: Orion 50 mm mini guider

Guiding camera: Orion USA Star Shoot Auto Guider

Focal reducer: TeleVue RFL-4087

Software: Backyard EOS 3.1.8ProDigital Software Astronomy ToolsPHDPhotoshop CS5MLUnsold Images Plus

Resolution: 5064x3300

Dates: Oct. 19, 2017

Frames: 15x240" ISO800 20C

Integration: 1.0 hours

Darks: ~9

Avg. Moon age: 29.25 days

Avg. Moon phase: 0.09%

Bortle Dark-Sky Scale: 5.00

Temperature: 10.00 job: 1784102

RA center: 23.612 degrees

DEC center: 60.976 degrees

Pixel scale: 1.276 arcsec/pixel

Orientation: 91.317 degrees

Field radius: 1.071 degrees

Locations: StarHome Observatory, Stacy, Minnesota, United States


Collinder 15 is the small cluster below and to the left of center.



Dave Venne

Sky plot

Sky plot


M103 and Collinder 15, 


        Dave Venne